Method of producing masonry simulating panel



NOV. 24, 1953 W, A LAWSON 2,660,217

METHOD OF PRODUCING MASONRY SIMULATING PANEL Filed March 2, 1950 '7 Sheets-Sheet l m [un Nov. 24, l

Filed March W. A. LAWSON 2,660,217

METHOD OF PRODUCING MASONRY SIMULATING PANEL '7 Sheets-Sheet 2 Nov. 24, 1953 w. A. LAWSON 2,660,217

METHOD OF' PRODUCING MASONRY `SIMULTING PANEL Filed March 2, 1950 '7 Sheets-Sheet 3 i lnzf'en for Nov. 24, 1953 W. A, LAWSON 2,660,217

METHOD OF PRODUCING MASONRY SIMULATING PANEL Filed March 2, 1950 Sheets-Sheet 4 Tm/'enfer M. /ZLawon Nov. 24, 1953 w. A. LAWSON METHOD OF PRODUCING IVASONRY SIMULATING PANEL '7 Sheets-Sheet 6 Filed March 2; 1950 jnzferzlr M. H. Lau/,5012

(y Wind@ NGV.' 24, 1953 W A LAWSON 2,660,217

` METHOD OF PRODUCING MASONRY SIMULATING PANEL Filed March 2, 1950 7 Sheets-Sheet '7 W H. lauw Patented Nov. 24, 1953 METHOD F PRODUCING:k MASONRY SIMULATING PANEL William A. Lawson, Montreal, Quebec, Canada,

assigner to Building Products Limited, Montreal, Quebec, Canada Application March 2, 1950, Serial No. 147,316

3 Claims. (Cl. 154-41) One object of the invention is the provisionk of an improved granular surfaced masonrysimulating insulating panel in which the granular surfaced masonry simulating areas are contrastingly colored to give an improved appearance.`

Another object of the invention is the provision of a-method of manufacture whereby the granular surfaced brick or stone simulating areas are formed with even and sharply defined marginal edges which further improve theappearance of the panel.

A further object is the provision of simple and yeflicient apparatus for carrying out the aforesaid method of manufacture.

Other objects, advantages and characteristic features of the invention will be more readily understood from the following detailed description taken in connection with the accompanying drawings, wherein- Fig. 1 is a plan View of an ornamental insulating siding panel embodying the invention.

Fig. 2 is an enlarged fragmentary longitudinal sectional view taken on the section line 2-2 of Fig. 1.

Fig. 3 is an enlarged vertical sectional View taken on the section line 3-3 of Fig. 1.

Fig. 4 is a fragmentary longitudinal sectional view of a complete panel and shows the manner in which the ends of the panel are formed to provide vertical shiplap joints between panels in the same row.

Fig. 5 is a diagrammatic view of an apparatus whereby the coating and granular surfacing of the cap sheet forming part of the panel shown in the preceding gures is carried out as :a continuous process.

Figs. 6 and 7 are fragmentary plan views of the cap sheet and shoW successive steps in the surfacing of the cap sheet to provide the ornamental brick simulating design.

Fig. 8 is a sectional view of the component rolls of a 4cold roll molding or pressing unit used in the production of the completed panel shown in Figs. 1 to 3 inclusive.

Fig. 9 is a sectional view of the component rolls of a hot roll molding or pressing unit also used in the production of the completed panel. n Figs. 10 to 12.inclusive illustrate an alternate method which may be employed in surfacing the cap sheet to provide thereon brick simulating areas of contrasting color characteristics.

Figs. 13 and 14 illustrate a further modification of the procedure employed for applying brick-simulating areas of contrasting color to the cap sheet.

Fig. 15 is a side elevational view of one of the special color drifts employed in the surfacing procedure illustrated in Figs. 10 to 14 inclusive.

Fig. 16 is an end elevation of the color drift shown in Fig. 15.

Fig. 17 is a detail view of a portion of the color drift shown in Figs. 15 and 16.

Fig. 18 is a plan View showing a fiat development of the cylinder wall of the color drift diagrammatically shown at in Figs. 10 and 13.

Fig. 19 is a longitudinal sectional view of the cylinder wall shown in Fig. 18, the plane of the section being substantially along the section line I9-l9 of Fig. 18.

Fig. 20 is a plan View showing a flat development of the cylinder wall of the color drift diagrammatically shown at -61 in Figs. 10 and 13.

Fig. 21 is a longitudinal sectional view of the cylinder Wall shown in Fig. 20, the plane of the section being substantially along the section line 2 I-2l of Fig. 2'0.

Fig. 22 is a vertical sectional view of one of the hopper units forming part of the color drifts diagrammatically shown at 64 and 61 in Fig. 13.

Fig. 23 is an enlarged detail view of a portion of the hopper unit shown in Fig. 22.

One type of finished brick simulating siding panel produced in accordance with the invention is shown in Figs. 1 to 4 inclusive. It comprises an insulating base 4 provided with a preformed brick wall design consisting of raised brick simulating areas 5 and sunken or depressed longitudinally and transversely extending mortar joint simulating areas and l. The brick wall design of the base is covered by a granular surfaced cap sheet 8 presenting spaced brick simulating areas 9 and l0 and longitudinally and transversely extending mortar joint simulating :areas Il and l2, the latter being depressed into the mortar joint simulating areas `ii and i of the base. The cap sheet is united to the base by pressing it against an adhesive coating I3 of asphalt previously applied to the brickwall design of the base.

The base 4 may be made of compressed paper, Woodpulp or other brous materials commonly employed in the manufacture of Wallboard or insulating board. The fibrous mass of the base may be of a homogeneous character or may consist of separate layers of fibrous material bonded together by asphalt or other suitable adhesive employed in the manufacture of laminated insulating board.

Prior to the application of cap sheet 8 the base 4 is saturated with crackingI coal tar or other suitable waterproofing'substance preferably of an asphaltic or bituminous nature and is then provided with the previously mentioned adhesive coating I3 of asphalt covering the brick wall design afforded by the raised brick simulating areas 5 and the intervening depressed mortar joint simulating areas B and 'I.

The cap sheet 8 is madeof roofing felt saturated with a waterproof compound such as tar, petroleum or asphalt and is provided on its Weather side with a coating layer I5 of asphalt in which suitable granules are partially embedded to form a continuous granular surface layer I8. The granular surface layer I6 is covered by spaced patches I'I and I8 of asphalt in which further granules are partially embedded to form raised granular surfaced brick simulating areas 9 and I0 between which narrow portions of the granular surface layer I I3 are exposed to simulate the longitudinally and transversely extending mortar joints II and I2.

An important feature of the invention resides in the fact that the brick simulating areas 9 of the cap sheet 8 are surfaced by a granular mix of predetermined color characteristics contrasting with the color characteristics of the granular mix employedfor surfacing the brick simulating areas I8. For example, each of the brick simulating areas 9 of the cap sheet may be surfaced with a granular mix of predominantly red color characteristics consisting of a blend of 80% red granules and brown granules. The remaining brick simulating areas I8 of the cap sheet may be surfaced with a granular mix of predominantly brown color characteristics consisting of a blend of 80% brown granules Yand 20% red granules. This provides a panel of substantially improved appearance as compared with panels in which all of the brick simulating areas of the cap sheet are surfaced with a granular mix of the same color characteristics.

Another important characteristic of the 'panel described herein is that the brick-simulating areas of the cap sheet 8 are dened by straight, even, marginal edges which not only improve the appearance of the brick simulating areas but also cause them to stand out in sharper contrast with the intervening mortar joint simulating areas. This effect is obtained by a hot pressing operation to which the mortar joint simulating areas of the cap sheet are subjected after the cap sheet has been assembled with the base.

As shown in Fig. 3 the base of the panel is provided with an inner horizontal recess 23 adjacent its upper edge and an outer horizontal recess 24 adjacent its lower edge. Recess 23 provides a tongue 25 which is covered on its inner side by the upper edge portion of cap sheet 8. Recess 24 provides a tongue 26 projecting below the main body of the base and covered by the lower edge of the cap sheet. When a plurality of rows of ypanels are assembled on the surface to be covered the tongue 28 at the lower edge of each panel is fitted over the Vtongue 25 at the upper edge of the next lower panel to provide a shiplap weatherproong joint. The base 4 of the panel is also provided, at one end (Fig. 4), with an inner recess 28 and at the opposite end with an outer recess 29. The recess 28 forms a tongue 38 which is covered at its inner side by one end of the cap sheet 8. The recess 29 forms a tongue 3| which is covered on its inner side by the other end of the cap sheet 8. When a plurality of panels are assembled on the surface in superimposed rows or courses the end tongue 3I of one panel fits over the end tongue 30 of the next adjacent panel in the same row to provide a vertically extendingshiplap joint.

In producing the panel described herein the base14 is :cut to size and then grooved to provide-the brick simulating areas 5, the mortar joint simulating areas 6 and 1 and the recesses 23, 24, 28 and 29.-V The base 4 is then saturated with cracking coil tar or other waterproofing substance of an .asphaltic or bituminous nature and is provided, at one side, with the previously mentioned coating layer I3 of asphalt to provide an adhesive surface for the bonding of the cap sheet 8 to the base.

The coating and granular surfacing of the weatherproofed cap sheet 8 may be carried-out as a continuous process, as illustrated in Fig. 5.

` As here shown, a traveling web 8 of roofing felt,

which has previously been saturated with asphalt or other suitable waterproofing compound and coated on one side with a tacky base layer 'I3 of asphalt in transit-.is passed beneath a color drift 32 which depositsl acontinuous layer I6 of granular-particles on the upper surface -of the asphalt coating I5. From the color drift 32 the asphalt is passed around guide rolls' 33 and 34 so that the granular surface layer I6 is brought into contact with an asphalt pick-up roll 35 having its lower portion :submerged in a body of asphalt contained in a suitable tank or vessel 38. The pick-up roll 35'is a pattern type roll designed to apply to the granular surface the previously mentioned spaced brick simulating patches I7 of asphaltv as shown in Figs. 2, 3, 5 and 6. From the pick-up roll 35 the web 8 is passed vbeneath fthe color drift 38 which deposits'a secondlayerof granules on the web to form the lpreviously mentioned brick simulatingl areas 9. In this connection it will be understood that the granules deposited on the brick simulating patches I'I `of asphalt are retained thereon while the loose Vgranules deposited on the areas lyingbetween theseras'phaltpatches I1 are subsequently removed by air or suction applied througha suitable conduit 39beneath which the web passes -as it travels beyond the color'fd'rift 38. From the conduit 39 the web is passed-around guide rolls 4I rand-42 ntooonta'ct with a-second pick-up roll -43 which `is similar to the pick-'up roll 35 and -servesto deposit on the web Vthe previously mentioned brick simulating asphalt patches I 8,as shown in-Figs.'2, 3 and 7.

From the pick-uproll 43 the webpa'sses beneath a second color drift 44 which deposits thereon a further layer of granular particles on the web to form the brick simulating areas I8. As the web passes beyond the color drift 44 the last mentioned particles of granular material which are deposited on the asphalt patches I8 adhere thereto but the granules deposited on portions of the web lying outside the brick simulating asphalt patches fI8 are removed by air or suction applied through ka suction conduit-48. Following these operations the web iis cut 'into a plurality of'cap sheets 8 `of the required size and each cap sheet isV then applied to a base 14 by placing it ron the asphalt coating layerA I3 of the base. This assembly is vthen passed -between E7 carried.by'lsaidhopper. .lfhei'a-rrmuntzoi'material vdeliveredxfrorri the hopperfiis regulatedby ua:iljustment of.:a feed regulating-gate .8d sliding in -a-suitabledfguideway reformed ybyirand between the. hopperWalflISS'aand an'outer.stationaryguide f-platelisecured 'tob'the hoppen-As rrnoresclearly vshown Linzlig. the :gate 184* 'carries upper and loweranglelmembers Shea'ch presenting anfarm H88 proiectingoutwardly through an elongated fsl'ot et .f-providediin.guidegplate 186..` The arms B8 vare positioned abovefrand below the flange f90 of :an angle .bar '29 lrwhicnzis fsecuredsto :guide plate 86 and extends across Van intermediate portion of -.slo't list: The iiiange 90 oflan'gle bar 19| `is provided witntan :openingrfz' Vfor l the passagelfof'an adju'sting'iscrew 93 having its endsrwelded-toth'e -arimsits` o'frthe angle members yt'l carri-ed by gate 84. Nuts 95 and'fSlE` :are positioned above the vIlange 90 ofangle bar Slfin-sc'rew-threaded engagement with screw-93 and co-operate with said Ascrew andffla'nge to provide-a means vvfor adjusting the gateSll toward :and away from the eed -rollerr82 to therebyregulate the `amount of `granu- ,lar material delivered from hopper-dil.

As shown. to advantagel in Figures 15 to 17 inclusive, the cylinder loof each ofthe color'drifts 64'and61 lis -providediwith internal end rings '97 boltedfto mounting rings '98. Themountin'g rings vrare provided with *flanges 99 rotatably supported by two pairs of angedfsupportingrollers it@ vcarried byparallel shafts lill journalledin suitable bearings '102. Theimountingirings @t also oarr'y"ring gears IUS which are driven Vby suitable drive pinions (not snowm.

Each cylinder 18 is providedwitha `plurality of `spaced internalribs "ttt and with elongated vcircum'ferentially'eXtenngslots |506 located be tween vsaid ribs. These ribs-and slots are Varranged in accordance withfa predeterminedpat` tern.'` Forvexample; Figures 18 to 20A inclusive illustrate the pattern arrangement ofthe cylinder ribsf and -`slots of the color drifts Sli and *.51 'used`in"the cap sheet-surfacing method-shown in Figures 13 land y14. lIn this case,1the :cylinder yslotswl of color drift 64 are arranged according `to the pattern shown inFgure 18 Yandthe 'patches :of granular .material deposited-on "the -web or -cap sheet f6@ i throughthese slots, during rotation lof the cylinder, `form `Ithe brick-simulating areas iindicatedtatz in Figure 1'4; "The cylinder-#slots I 0B of 1 color :drift :Si are arranged accordingto .the-fpattern:shown` inFigure 20 and l'the patches of granular/.material deposited on the 4wehe-'or cap :sheet V60V Athrough` .these .slots fform the bricke simulating areas :indicatedat 113 in Figure 14. Theremainingbrickesimulating areas fit, shown in `Figure '14, are formed 'by granular` material which is deposited :by the .conventional color drift Nl in -a single l.layer severing' the 'whole width and length fof :the '.websorvcapsheet .et v but which adheres only` to those areas .of .the asphalt-coated side. of the webzor cap sheet which have 'not previously been :covered'by the granular vmaterial deposited by fthe colorridrifts 64 Aand `El. The particles of th'e'granular material which are deposited by the conventional color drift 16 and fall on the previouslyiapplied granular brick-simulating patches 'l2 andzal, fall away from the web or cap sheet or areuemoved pneumatically :by blowing or suction.

It will be noted that `all of the cylinderribs shown in Figures 18 to 21 inclusive, with :the exception of the right .hand ribfshown inigure 18 ,.extend between-thesends of their ,respective cylinder ingazig-.zag l fmanner which isdetermined y'bythe VAstaggered arrangementfof certain of the cylinder slots 106. :'These'r-ibs m5 `serve as lifting ribs by `means l`'of which the Asurplus granular material :which "is deposited 'on `the innerisurfaces `oi" the eylinderbythe hopper units 11 but is-not discharged throug'hithe slotsllf ils piclreolupv and 11e-deposited in thehoppersgt 'Withf reference `to 'the color -drifts 6'4 andffl .shown in Figure 10,;itwill be iunderstood that-the pattern arrangement of 'the cylinder'fribs'and slots of these two fcolor' drifts-will be varied from that' shown in lFigures 11'8 to `l2l .inclusive `'in `oriler to provide -for `the deposit/'of alli the brickesiniulating granular patches 66 by the 'color drift`8`4 andror the deposit of fthe lremainingbriclrsimu- 'lfating'areas baby the color drit 67|.

Having thus 4described the nature oit-my invention and a number of specific examples, will be understood that various modificationsfmaybe resorted to within the lscope and xspirit-fof 'the invention as defined by the appendedolairns.

I cla-im:

1. A method of producing'arelativelystii and rigid masonry vsimulating lsiding panel Ywhich comprises grooving one side of a relativelystiff and rigid base of insulating materialto thereby provide said base with apreformedbrick walljdef sign consisting of raised brick simulatingareas bordered by longitudinally and transversely-'extending depressed `mortar joint simulating areas, applying acoa'tin-gof adhesive material to'the brick and mortar 4joint simulating areas of'said insulating base, `covering the masonry simulating 'surface of the base bysuperimposin'g thereon a Vgranular surfaced cap -sheet havingthe kgraniti;- lar surface thereof exposed, lsubjecting theresulting assembly to a lco-ld pressingoperationrin which uniform pressure is `exerted against the exposed granular surfaced-side ofthe cap sheet-tothereby irmly unite brick' simulating areas vof the cap sheet to the underlying brick simulating areas of the insulatingbase and to"simultaneouslydepressfother mortar joint simulating areas ofthe cap `sheet into bonding engagement-with the dei iningwalls-of the depressed-mortar :joint simulating areas of the base and there'after@subjecting said assembly vto a'hot pressing operation in which pressure is applied only to Vthe idep'ressed portions fof the cap sheet to depress these'areas of the 'cap sheetdeeperintol the underlying* insulating base.

2. A method of4 producing-a1substantially 'thick 'andrigidmasonrysimulating -sidingpanel which comprises grooving `onefside cfa relativelyfsti andirigid 'base .of insulating material -to fthereby providesaid base with alpreformed ma'sonry'sin'lu` lating bri'ckwalldesign `consi-sting ofiraised brick simulating fareas bordered by depressed-longitudinally and Vtransversely lextending 4vmortar `joint simulating areas, applying afcoating ofjaihesivematerialxto the brick-and rnortarijoint Asimulatingtareas of said basa-:applyingto one sideiof a cap sheet .ofroong material a'c'overing layer "of granular particles "partially embedded in an underlying layer .of a-sphalt,ssuperimposing the cap sheetzonthe:gro'ovedmasonry simulating sideof the insulating base with vthe `granular-'surface -of the cap sheet exposed,fsubjecting the granular surfaced 4side of the capsheettoxpre's- .sureto therebypressmasonry simulating portions of the cap sheet rmlyiagainstthe underlying masonry simulatingrzareas of therbase and.fsim'ul taneously depress ,other mortarjoint simulating vareas of the cap asheetzinto..bondingoengagernent with :the dening Twalls `pfrxthe idepressedmortar upper and lower cold rolls 48 and 49 (Fig. 8) which cooperate with each other to press the cap sheet and base together so that the masonry and mortar joint simulating areas of the cap sheet 8 are pressed or molded with uniform pressure against the corresponding areas of the base 4. In this connection it will be noted that the lower roll 49 is a plain surfaced roll while the upper roll 48 is a pattern forming roll provided with raised ribs 50 and sunken areas 50'. As the base and cap sheet assembly is passed between these rolls the mortar joint simulating areas l and l2 of cap sheet 8 are depressed into the mortar joint simulating areas 6 and 1 of base 4 by the ribs 56 of roll 48 and the brick simulating areas 9 and i6 of the cap sheet are simultaneously pressed against the underlying brick simulating areas 5 of the base by the sunken areas 56 of roll 46. From the cold rolls 45 and 49 the panel is passed between upper and lower rolls 53 and 54 of a hot roll pressing or molding unit 55. The lower roll 54 is a plain surfaced roll while the upper roll 53 is a hot pattern roll provided with raised ribs 51 and sunken areas 58 corresponding to Vthose of the cold pattern roll 48. However, in

the case of the hot pattern roll 53, the ribs 51 are made of increased height so that during its passage through the hot roll unit 55 the cap sheet 8 is subjected only to the pressure of the ribs 51 which bear against the mortar joint simulating areas Ii and l2 and serve to depress these areas deeper into the underlying base. The ribs 51 are made of such a width that they serve to even off the marginal edges of the brick simulating areas 9 and I6 of the cap sheet 8 so that these areas are formed with straight sharply dened edges which substantially improves the appearance of the panel. The hot pressing operation effected by the ribs 51 of the hot pattern roll 53 also serves to so completely embed the granules of the mortar joint simulating areas of the cap sheet in the underlying asphalt so that these mortar joint simulating areas have a substantially uniform black appearance contrasting sharply with the color of the brick simulating areas 9 and l0.

In the foregoing I have described a two-stage application of the brick simulating areas 9 and l0 to the cap sheet 8 by the use of the pick-up rolls 35 and 43 and the conventional color drifts 38 and 44 but it will be understood that by increasing the number of pick-up rolls and color drifts it is possible to apply the brick simulating patches of asphalt to the base granular surface layer 16 of the cap sheet in three or more stages and to surface the asphalt patches applied in each stage with granular material of color characteristics different from that of the granular material employed for surfacing the asphalt patches applied in each of the remaining stages.

Figs. l0 to 11 inclusive illustrate a modified procedure which may be followed in surfacing the cap sheet of the insulating panel with a single layer of granular material to provide brick colored areas of contrasting color characteristics. In this case a web B0 of roofing felt which has previously been saturated with a waterproofing compound is passed around a guide roll 6i into contact with a coating roll 62 which applies a coating layer 63 of asphalt to one side of theweb. From guide roll 6I the web passes beneath a special type of color drift 64 which, as hereinafter described, is designed to deposit, on predetermined portions of the coated side of the web, a plurality ofpatches of granular particles which adhere to the asphalt coating 63 to form brick simulating areas 66, as shown in Fig. 11. From the color drift 64 the Web is passed beneath a second color drift 61 designed to deposit brick simulating patches 68 of granular material on those portions of the coated side of the web which were not covered by the patches of granules deposited by the first color drift 64. The brick simulating patches 66 deposited on the web by the color drift 64 are contrastingly colored with reference to the brick simulating patches 68 of granular material deposited on the web by the second color drift 61. By this method, it is possible to provide the web with a single layer granular surface including brick simulating areas 66 which are contrastingly colored as compared with the remaining brick simulating areas 68 of the complete brick simulating pattern.

The granular surfaced web formed as shown in Figs. 10 and 11 is cut into individual cap sheets of the required size which are assembled with their respective bases 4 and then passed successively between the component rolls of the previously described cold roll and hot roll pressing units so that the merging marginal portions of the brick simulating areas 66 and 68 are depressed into the underlying grooves 6 and 1 of the base 4 to provide depressed mortar-joint simulating areas sharply defining the edges of the brick simulating areas 65 and 68.

The procedure illustrated by Figures 9 to 11 inclusive may be modied as shown in Figures 13 and 14. In the latter instance, a third color drift 1l! of conventional design is used in conjunction with the special color drifts 64 and 61. The color drift 64, shown in Figure 13, is designed to deposit, on the asphalt-coated surface 63 oi web 69, the brick-simulating patches of granular material indicated at 12 in Fig. i4. The bricksimulating patches of granular material indicated at 13 in Figure 14 are deposited by the color drift 61. The remaining brick-simulating patches of granular material indicated at 14 in Figure 14 are deposited by the conventional color drift 1G. The color characteristics of the granular mix deposited by each color drift shown in Fig. 13 is predetermined so that it contrasts with the color characteristics of the granular mix deposited by each of the other color drifts shown in said figure. The mortar joint simulating areas indicated at 15 and 16 in Fig. 14 are formed, after the granular surfaced cap sheet has been associated with its base 4, by depressing merging marginal portions of the brick simulating areas 12, 13 and 14 into the mortar joint simulating grooves 6 and 1 of the base, this being accomplished by passing the assembled base and granular surfaced cap sheet between the component rolls of the cold-roll and hot roll pressing units shown, respectively, in Figures 8 and 9.

Each of the special color drifts diagrammatically shown at 64 and 61 in Figures 10 and 13 comprises a stationary, granular-mix, feed hopper unit 11 arranged within a rotating cylinder 13. Each cylinder 15 is provided, as hereinafter described, with a pattern arrangement of slots through which granular material fed from the associated hopper 11 is deposited on predetermined areas of the asphalt coating 63 of web 60.

As shown in Figs. 22 and 23, the hopper unit 11 of each of the coloi` drifts 64 and 61 comprises a hopper 86 provided with a bottom discharge opening 8i through which a mixture of granular material of predetermined color characteristics is delivered to a feed roll 62 journalled in bearings joint Isimulating areas of the base and thereafter subjecting said assembly to a hot pressing operation in which pressure is applied to the depressed masonry simulating areas of the cap sheet but notI to the brick simulating areas of the cap sheet, said last mentioned pressing operation serving to depress the mortar joint simulating areas of the cap sheet deeper into the underlying mortar joint simulating areas of the base and to cause the granules of the mortar joint simulating areas of the cap sheet to be substantially completely embedded in the underlying asphalt coating of the cap sheet.

3. The method of claim 1, characterized in that the granular surface of the cap sheet consists of granular mixes of different color characteristics applied so that, in the nished panel, the color characteristics of the granular mixes covering certain of the brick simulating areas of the cap sheet will contrast With the color characteristics of both the mortar joint simulating areas and the remaining brick simulating areas of said cap UNITED STATES PATENTS Number Name Date 1,144,313 Wright June 22, 1915 1,394,149 Cumfer et al Oct. 18, 1921 1,414,778 Elvidge May 2, 1922 1,448,203 Cumfer et al Mar. 13, 1923 1,484,760 Cumfer Feb. 26, 1924 1,513,969 Cumfer et al. Nov. 4, 1924 1,517,826 Cumfer et al Dec. 2, 1924 1,952,754 Harshberger Mar. 27, 1934 2,056,274 HoldsWorth Oct. 6, 1936 2,151,220 Mattes Mar. 21, 1939 2,178,273 Wittenberg Oct. 31, 1939 2,214,387 Snyder Sept. 10, 1940 2,245,047 Odell June 10, 1941 2,543,251 Muench Feb. 27, 1951 

